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Correction in response to the comment

Posted by Velpandi on 22 Nov 2011 at 21:40 GMT

two miRNA and two small RNA controls
http://plosone.org/article/info:doi/10.1371/journal.pone.0022730#article1.body1.sec3.sec1.p3

four small nuclear RNA (snRNA) controls

No competing interests declared.